Discharge chute assembly for magnetic clarifier



Jan. 3, 1956 A. w. GARDES ET AL DISCHARGE CHUTE ASSEMBLY FOR MAGNETICCLARIFIER Filed Feb. 21. 1952 1572 5 fiZ QTS Alfred W Gain es rafl a!0/45 DANG/Z116 "*"H zZHE Alfred W. Gardes and Nicholas ,Dudchik,Lebanon, Ind.',

assignors to Houdaille-Hershey of Indi Inc a con poration of IndianaApplication February 21, 1952, Serial No. 272,827 7 Claims. (cram-1.5

This invention relates to improvements in a discharge chute assembly fora magnetic clarifier, and more particularly to a discharge chuteassemblyforuse in'connection with a clarifierhaving magnetized pickupmeans rotating in a bath of liquid to be jcleansedof magnetic foreignparticles, the invention being highly desirablefor use in connectionwith a magnetic clarifier for coolant and cutting oils and the like,although the invention will have other uses and purposes as will beapparent'to one skilled in the art.

In the past, some difiiculty has been experienced in the removal ofswarf, or the accumulation of gathered magnetic particles, from therotary magnetized pickup means of magnetic clarifiers. qnently caused bythe variances in consistency of different liquids being clarified. Forexample, where a discharge chute assembly effectively carries offaccumulated swarf without the loss of more than a negligible quantity ofthe liquid for what may be termed a light oil, the same chute assemblywould not be satisfactorily effective with a heavy oil, because an undueand undesirable amount of that oil would travel over the chute alongwith thes warf. It is extremely difiicult to adequately reclaim liquidcommingled with the swarf. Consequently, a magnetic clarifier would haveto be constructed to operate upon liquid within a limited range, or elsedischarge assemblies would have to be changed when liquids of difierentconsistencies were utilized. v

With the foregoing in mind, it is an important object of lowingdisclosures, taken in conjunction with the accompanying drawing, inwhich Figure 1 is a pictorial view of a magnetic clarifier equipped witha discharge chute assembly embodying principles of the instantinvention; and

Figure 2 is an enlarged fragmentary vertical sectional view through thestructure of Fig. 1, illustrating the discharge chute assembly in sideelevation.

As shown on the drawings:

At the outset, it may be best to mention that the magnetic clarifierwith which the instant invention is associated, is more fully set forth,described, and claimed, in an Alfred W. Gardes copending applicationentitled Magnetic Clarifier and Method of Clarifying, filed February 8.1951, Serial No. 210,060.

The magnetic clarifier with which the instant invention is shown inoperative association comprises in general a base portion 1 which alsofunctions as a reservoir for any overflow of liquid to be cleansed. Suchoverflow returns to the sump, tank, or other location of contaminatedliquid through an outlet pipe 2. Near one end of the base is anupstanding frame portion 3 having a laterally extending wing 4 thereon.This frame portion together with an upstanding tank-like structure 5 atthe other end of the base provides support for a removable tank 6through which the contaminated liquid flows during the cleansingoperation.

After being cleaned by magnetic means to be later described, thefiltrate or cleansed liquid enters the structure 5 which forms areservoir therefor, and exits therefrom through a pipe 7 to return tothe cutting, grinding, or other type of machines with which the liquidfunctions as t a coolant or cutting oil.

the instant invention to provide a discharge chute assem-' bly of simpleConstruction which is readily adjustable to compensate for differencesin consistencies of the liquids being cleansed.

Another object of the invention resides in the provision of a dischargechute assembly having'portions thereof arranged at an angle to eachother, and this angle 'of the] chute assembly is readily and easilyvariable'in keeping with the consistencies of the liquids undergoingclarificatron.

Still another object of the invention resides in the provision of asimple and very economical chute assembly for a magnetic clarifier,which may readily be adjusted to compensate for variances in consistencyof liquids being clarified without removal of the assemblyfrom theclarifying apparatus. v

Still a further feature of the invention residesin the provision of adischarge assembly for a magneticclarifier, which assembly may readilybe adjustedto compensate for variances in consistency of the liquidsbeing clarified,

. which contact the inside faces and the adjustment may be effectedwhile the clarifier is in operation and in an extremely short intervalof time, whereby material saving results in that the labor is minirnizedand there is no need for shutting down the machine for frequent trialswhen a liquid of different consistency than that formerly undergoingtreatment'is to be cleaned.

While some of the more salientfeatures, characteristics and advantagesof the instant invention have been. above pointed out, others willbecome apparent from the 01- As seen in Fig. 2, the tank is baffled bothlongitudinally and transversely thereof as indicated at 8 to insure theliquid coming in contact with the magnetic pickup means. A flared inlet9 divided to seat over the baflles as indicated by dotted lines in Fig.2 supplies contaminated liquid in one end of the tank.

Journaled in opposite ends of the structure is a rotary shaft 10 whichmay be driven by way of a suitable electric motor 11 or other powerdevice, through a gear reduction arrangement generally indicated at 12.Carried on this shaft within the tank 6 is a series of magnetic rings ordisks 13, 14 and 15 in spaced realtionship. These disks are separated bya ring magnet 16, preferably of a strong permanent variety, the ends ofof confronting disks. The shaft 10, of course, is preferably ofnon-magnetic material, and around each ring magnet, but spacedtherefrom, is a non-magnetic drum 17.

As liquid flows through the tank, magnetic foreign particles are removedfrom the liquid by the magnetic pickup disks 13, 14 and 15 rotatingtherein, and the swarf will accumulate on the exposed circumferentialportions of these disks, and some will possibly be carried along on theadjacent surface of the nonmagnetic drum 17.

The instant invention centers itself with the removal of the accumulatedswarf from the magnetic pickup means. For this purpose a dischargeassembly has been provided, and this assembly is preferably mounted upona stationary rod or shaft 18 secured at one end in the wing 4, and atthe other end in a lug 19 projecting from the aforesaid reservoir 5.Substantially centrally disposed on the supporting rod 18 is a fixedflat faced lug 20 havir1g an internal threaded bore to accommodate aholding screw. A discharge chute 21 having upstanding side flanges224-22 is adjustably secured to the fixed lug 3 Obviously, the chute maybe adjusted upwardly or downwardly the extent of the slot 25.

At the upward and forward end of the chute 21 is an element 26 which forthe purpose of convenience may be termed a scraper, this element havingside flanges 2727. The scraper 26 is hingedly connected to the chute 21by means of a piano hinge indicated at 28 in Fig. 2. As seen in Fig. l,the scraper 26 is notched in its forward end so as to extend over andbetween the pickup rings 13, 14 and 15. This element 26 need notactually provide scraping contact with the circumferential face and sidemargins of the pickup rings, or with the surface of the non-magneticdrum 17 therebetween, but only need approach these surfaces. Abrush-like accumulation of swarf will be carried by the pickup rings,and this accumulation will assemble far in advance of the end of thescraper so that the pickup rings and drum therebetween are wiped cleanby the brush accumulation, and this accumulation will travel over thesurface of the scraper 26 until it reaches the inclined chute 21.

As seen clearly in Fig. 2 at 29, the side flanges 27 of the scraperextend slightly inside in overlapping relationship with the side flanges22 of the chute.

The angle between the scraper and the chute may be selectively adjusted,and to this end, on each side of the assembly, a link 30 is pivoted asat 31 to the scraper flange 27, and the opposite end of this link isprovided with an elongated slot 32 through which a bolt 33 mounted inthe side flange 22 of the chute extends and may be locked in anysuitable position of adjustment. It will be noted that in everyinstance, the screw heads of the respective bolts and pivots are locatedon the inside so as to interfere as little as possible with the movementof the swarf.

In operation, the instant invention is extremely simple and highlyeffective. Assuming that the liquid being clarified is what may betermed a relatively heavy oil, a relatively sharp angle between thescraper 26 and the chute 21 is desirable to prevent a quantity of thisliquid traveling over with the swarf and down the chute. When this isthe case, the discharge assembly may be adjusted to the full lineposition of Fig. 2, wherein it will be noted that the scraper terminatesto the left of the vertical center line of the pickup means, these meansrotating clockwise as seen in this figure. It will also be noted thatthe scraper is upwardly inclined, and this inclination will not affectthe movement of the swarf, but will discourage the heavy oil fromclimbing to the entrance of the chute.

On the other hand, when a relatively light oil is being clarified, thedischarge assembly may be adjusted to the dotted line position seen inFig. 2, wherein the angle of elevation on the scraper is materiallylessened, since the lighter oil will not have the tendency to follow theswarf that the heavier oil does. It will be apparent, therefore, that bymanipulation of the bolt 33 on each side, and the screw 23, thatsubstantially any desirable angle may be attained between the scraper 26and the chute 21 in keeping with the consistency of the liquid beingclarified. It will be especially noted that the structure is simple inits adjustment, and the adjustment may be made while the clarifyingapparatus is operating. Obviously, the discharge assembly need not beremoved from the machine, is economical, and highly durable. Thedischarge chute 21, of course, may lead to any suitable receptacle forthe swarf.

-It will be understood that modifications and variations may be effectedwithout departing from the scope of the novel concepts of the presentinvention.

We claim as our invention:

1. A discharge assembly for a magnetic clarifier, including a downwardlyinclined chute for the discharge of swarf, a scraper element pivoted tothe upper end of the chute and having a free edge portion fordisposition in Cit proximity to the pickup drum of a clarifier, each ofsaid chute and scraper element having upstanding side flanges, a linkpivoted to a side flange of the scraper element, said link having anelongated slot therein at the other end, and means on the side flange ofthe chute extending through said slot to anchor the link in a positionof adjustment.

2. A discharge assembly for a magnetic clarifier, including a downwardlyinclined chute for the discharge of swarf, a scraper element hingedlyconnected to said chute at the upper end thereof, adjustable means tohold the angle between the scraper and chute at a desired degree with anedge of the scraper in proximity to the pickup drum of a clarifier, saidchute having an elongated slot in an intermediate location thereof, andmeans extending through said slot to anchor the chute to a supportingmember in a desired position of adjustment.

3. A discharge assembly for a magnetic clarifier, including a downwardlyinclined chute for the discharge of swarf, a scraper element hingedlyconnected to said chute at the upper end thereof, adjustable means tohold the angle between the scraper and chute at a desired degree with anedge of the scraper in proximity to the pickup drum of a clarifier, saidchute having an elongated slot in an intermediate location thereof, acover over said slot, and securing means extending through said coverand slot for engagement with a supporting member.

4. In combination with a magnetic clarifier having rotary magneticpickup means and a fixed discharge assembly support, a downwardlyinclined chute connected to said support, a scraper element pivoted tothe upper end of said chute with an edge in proximity to said pickupmeans, and adjustable means associated with said chute and scraperelement to selectively determine the angle therebetween and selectivelyvary the angle between the scraper and pickup means.

5. In combination with a magnetic clarifier having rotary magneticpickup means and a fixed discharge assembly support, a chute connectedto said support, said chute being outwardly and downwardly inclinedrelatively to the pickup means, a scraper element pivotally connected tothe upper end of said chute and outwardly and up- Wardly inclinedrelatively to the pickup means with an edge thereadjacent, andadjustable means to selectively vary the angle of inclination of saidscraper element and selectively vary the angle between the scraper andpickup means.

6. In combination with a magnetic clarifier having rotary magneticpickup means and a fixed support spaced therefrom, a discharge assemblyincluding a downwardly inclined chute and a scraper element pivoted tothe upper end of the chute and disposed at an angle thereto with an edgein proximity to said pickup means, adjustable means interconnecting thechute and scraper element to selectively vary the angle therebetween,said chute having an elongated slot adjacent the fixed support, andmeans extending through said slot to anchor the chute to the fixedsupport.

7. In combination with a magnetic clarifier having rotary magneticpickup means and a fixed support spaced therefrom, a discharge assemblyincluding a chute and a scraper end portion thereon and disposed at aninclination to the rotary pickup means, an edge of said end portionbeing in proximity to said pickup means, means to connect the assemblyto the fixed support, and adjustable means to vary the inclination ofsaid scraper end portion relatively to the pickup means.

References Cited in the file of this patent UNITED STATES PATENTS1,172,861 Stephens Feb. 22, 1916 l,415,859 Bates May 16, 1922 2,484,304Long et al Oct. 11, 1949 ,5 4,515 Vogel Aug. 14, 1951

